functionInitial_powerBased_powerHistory
Determines the initial neutron precursor power-based concentration and decay heat based on power history
Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Power | history | Power history up to simulation time=0, [t,Q] | |
| TRANSFORM.Units.InverseTime | lambdas | Decay constants for each precursor group | |
| TRANSFORM.Units.NonDim | alphas | Normalized precursor fractions [betas = alphas*Beta] | |
| TRANSFORM.Units.NonDim | Beta | Effective delayed neutron fraction | |
| SI.Time | Lambda | Prompt neutron generation time | |
| TRANSFORM.Units.InverseTime | lambdas_dh | Decay constants for each group | |
| Units.NonDim[size(lambdas_dh, 1)] | efs | Decay-heat fraction of fission power | |
| Boolean | includeDH | false | =true if power history includes decay heat |
| SI.Power | Cs_0 | fill(0, size(lambdas, 1)) | Precursor concentration at history time = 0 |
| SI.Energy | Es_0 | fill(0, size(lambdas_dh, 1)) | Decay-heat concentration at history time = 0 |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Power | Cs | ||
| SI.Energy | Es |